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via Coderanch by pankaj patil, 1 year ago
This exception has no message.
via Oracle Community by 807603, 3 months ago
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via Coderanch by Nathan Leniz, 1 year ago
java.util.ConcurrentModificationException at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) at java.util.AbstractList$Itr.next(AbstractList.java:419) at level.removeQid(Main.java:74) at SectionLevel.removeQid(Main.java:36) at Main.main(Main.java:105)